Changing States of Matter, Physical & Chemical Changes

1. How does water change state when it evaporates?

• Liquid water turns into water vapor.

• Solid water turns into liquid water.

• Water vapor turns into liquid water.

• Liquid water turns into solid water.

Tags

NGSS.MS-PS1-4

What is the outcome (happens) when you mix sugar and salt?

• A liquid forms

• A solution forms

• A physical change happens

• A chemical change happens

Which sentence is false?

• You can undo a physical change.

• You can undo a chemical change.

• Matter can change states after a physical change.

• Matter can change states after a chemical change.

What tool can be used to easily separate a mixture of iron and plastic paper clips?

• Beaker

• Strainer

• Balance scale

• Magnet

What causes water to freeze solid when placed in the freezer? The freezer...

• adds heat to the water

• does not let light shine on the water

• takes heat away from the water

• does not do anything to the water

What form of energy makes ice cream melt on a hot day?

• Sound

• Mechanical

• Thermal

• Electrical

Which change of state is the result of matter cooling?

• A gas becomes a liquid.

• A solid becomes a liquid.

• A liquid becomes a gas.

• A solid becomes a gas.

Observe the picture above.

What kind of change has heating the eggs caused?

• A mixture was formed.

• A solution was formed.

• There was a chemical change.

• There was a physical change.

A mixture can be created by -

• Pouring some water into a glass.

• Combining two or more materials.

• Blowing air through a straw.

• Melting a solid to form a liquid.

How can a student make a sample of sand part of a mixture?`

• Place the sample in a closed container and shake it.

• Add gravel to the sand sample and stir them together.

• Pour the sample into a bowl and warm it in sunlight.

• Spread out the sample of sand on a paper towel.